Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"cac duc tham snippets" » "cac duc pham snippets", "cac duc kham snippets", "cac duc tam snippets", "cac du tham snippets", "cac dac tham snippets", "cao duc tham snippets", "cac duc tham slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("cac duc tham snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
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